Improvement in the manufacture of bricks



UNITED STATES PATENT OErrcEO FRANK JONES, OF BOSTON, MASSACHUSETTS.

IMPROVEMENT IN THE MANUFACTURE OF BRICKS.

Specification forming part of Letters Patent No. 55,667, dated June 19, 1806.

To all 'whom it may concern:

Be it known that I, FRANK JONES, of Boston, in the county of Suffolk and State of Massachusetts, have invented a new and useful Improvement in Coating Bricks, and I do hereby declarethat the following is a full, clear, and exact description thereof, which will enable others skilled in the art to make and use the saine, reference being had to the accom panying drawings, forming part of this specitication.V

My invention consists in a new method or process of coating or covering bricks with mastic or cement. By this process l am enabled to coat such portions of each brick as may be necessary in an even and regular manner, and to apply the preparation in such a manner as to give a uniform thickness to the covering of each brick, thereby greatly lessenin the tendency of the mastic to peel off after being exposed to the action of the atmosphere for a short time, which is the case when it is applied in the usual manner.

I am al's'oeiia-bled by my process of treating each brick separately tolay on the preparation in uch more thoroughly,o give to the bricks a uniform size, and to retain the angles perfectly sharp and even, so that the joints ofthe work when laid will tit with precision and give the structure a fine and regular appearance.

To enable others skilled in the art to make use of my invention, I will now proceed to describe it, reference being had to the accompan ying drawings, and the letters of reference thereon, of which- Figurc lis a vertical longitudinal section of an apparatus which may be used in carrying out my invention. Fig. 2 is an end view of the same. Fig. 8 is a plan view. Fig. et is a perspective view of a completed brick.

Similar letters of reference denote like parts.

A, Fig. l, represents a frame or standard, which may be made of iron or other suitable material, and having cross-bars at either end, (marked ad.) Uponthese cross-bars areplaced the pieces E E, which support the vertical plate or gages B B. These plates are arranged so as to allow a brick to be placed edgewise between them, and are kept in their position by the thumb-screws G C, and are made of such length and height that when a brick is placed between them and resting on the pieces E E the edges of the plates shall project above the edge of the brick so much that when the space so formed is lled to a level with the edges of the plates the brick will be coated to the desired thickness.

Dis a thin metal strap, (plainly shown in Fig. 3,) which is placed about the outside of the upper edges of the plates B B, and which serves to prevent them from springing away from thc brick, andalso to form a perfect angle at the end after the mastic is applied. This strap is easily placed in position or removed when the brick is between the plates.

When it is necessary to coat the face of a brick the plates B B are moved by means of the screws O O back to a point of separation sufficient to admit of a brick being laid on its face between the plates B B. The bars E E, which support it, are then moved upward by means of the screws F F, till the upper face of the brick is alittle belo w the upper edge ot' the plates B B. Mastic is then applied till the sur` face coincides with the upper edge ofthe plates, which should be at a point sutliciently above the face ofthe brick to give the proper thickness to the covering.

Vhen it is desired to coat bricks with this preparation they are laid in a shallow vat containing boiled oil, the faces which are to be coated being placed downward in order to become thoroughly saturated. After being sufficiently moistened a brick is taken from the vat and placed in the apparatus represented in Figs. l, 2, and

1t the edge is to be coated, the platcsB B are separated by the screws O O sutliciently to admit the brick upon its other edge and longitudinally between them. When once placed the plates need no rearrangement while coating the edges or ends of the bricks. The mastic, which is the ordinary preparation used in coating buildings, is then laid on with a trowel to till the space above the edge of the brick, so as to be just level with the upper edge of the plates. Each brick being covered in a like manner, great uniformity both in the size of the completed bricks and also in the thickness of the coating is attained.

When it is necessary to coat the ends of any of the bricks they are placed so as to give the requisite space for thc desired thickness of the coating` between the end ofthe brick and the end ofthe plates B B. This being` done tirst, the edge is then coated, as before described, care being taken to keep the metal strips D D in their places, so as to insure aperfect corner after being` coated. The brick is then taken from the apparatus and the mastic allowed to set, which it does in a short time, when the brick well be ready for use.

But very few ofthe bricks will need a coating on either the face or ends, so that the work can be rapidi y carried on.

An additional ad vantage gained by this improved process of coating the bricks is that after being` laid for ashort time the oil with which the brick was saturated permeates the mortar in which it is laid, and in a short time causes it to become as hard as cement, and also rima Witnesses:

WILLIAM MURPHY, JOHN DrLLoN. 

